chore: Update discovery artifacts (#1416)

## Discovery Artifact Change Summary:
feat(bigqueryreservation): update the api https://github.com/googleapis/google-api-python-client/commit/63c00f6819408b943c2a7cc4bd2185828be173c6
feat(firebaserules): update the api https://github.com/googleapis/google-api-python-client/commit/7b2000437a01ecd25e4ba571049f62c5b6dc9d63
feat(iap): update the api https://github.com/googleapis/google-api-python-client/commit/18550fd0501057584ef6d2fa329f09b75dad97d8
feat(managedidentities): update the api https://github.com/googleapis/google-api-python-client/commit/d2220014e787c2a2c90808cfd1e49a25cd783e72
diff --git a/docs/dyn/securitycenter_v1.projects.sources.findings.html b/docs/dyn/securitycenter_v1.projects.sources.findings.html
index 0cf8495..12097c7 100644
--- a/docs/dyn/securitycenter_v1.projects.sources.findings.html
+++ b/docs/dyn/securitycenter_v1.projects.sources.findings.html
@@ -115,7 +115,7 @@
 
 { # Request message for grouping by findings.
   "compareDuration": "A String", # When compare_duration is set, the GroupResult's "state_change" attribute is updated to indicate whether the finding had its state changed, the finding's state remained unchanged, or if the finding was added during the compare_duration period of time that precedes the read_time. This is the time between (read_time - compare_duration) and read_time. The state_change value is derived based on the presence and state of the finding at the two points in time. Intermediate state changes between the two times don't affect the result. For example, the results aren't affected if the finding is made inactive and then active again. Possible "state_change" values when compare_duration is specified: * "CHANGED": indicates that the finding was present and matched the given filter at the start of compare_duration, but changed its state at read_time. * "UNCHANGED": indicates that the finding was present and matched the given filter at the start of compare_duration and did not change state at read_time. * "ADDED": indicates that the finding did not match the given filter or was not present at the start of compare_duration, but was present at read_time. * "REMOVED": indicates that the finding was present and matched the filter at the start of compare_duration, but did not match the filter at read_time. If compare_duration is not specified, then the only possible state_change is "UNUSED", which will be the state_change set for all findings present at read_time. If this field is set then `state_change` must be a specified field in `group_by`.
-  "filter": "A String", # Expression that defines the filter to apply across findings. The expression is a list of one or more restrictions combined via logical operators `AND` and `OR`. Parentheses are supported, and `OR` has higher precedence than `AND`. Restrictions have the form ` ` and may have a `-` character in front of them to indicate negation. Examples include: * name * source_properties.a_property * security_marks.marks.marka The supported operators are: * `=` for all value types. * `>`, `<`, `>=`, `<=` for integer values. * `:`, meaning substring matching, for strings. The supported value types are: * string literals in quotes. * integer literals without quotes. * boolean literals `true` and `false` without quotes. The following field and operator combinations are supported: * name: `=` * parent: `=`, `:` * resource_name: `=`, `:` * state: `=`, `:` * category: `=`, `:` * external_uri: `=`, `:` * event_time: `=`, `>`, `<`, `>=`, `<=` * severity: `=`, `:` Usage: This should be milliseconds since epoch or an RFC3339 string. Examples: `event_time = "2019-06-10T16:07:18-07:00"` `event_time = 1560208038000` * security_marks.marks: `=`, `:` * source_properties: `=`, `:`, `>`, `<`, `>=`, `<=` For example, `source_properties.size = 100` is a valid filter string. Use a partial match on the empty string to filter based on a property existing: `source_properties.my_property : ""` Use a negated partial match on the empty string to filter based on a property not existing: `-source_properties.my_property : ""`
+  "filter": "A String", # Expression that defines the filter to apply across findings. The expression is a list of one or more restrictions combined via logical operators `AND` and `OR`. Parentheses are supported, and `OR` has higher precedence than `AND`. Restrictions have the form ` ` and may have a `-` character in front of them to indicate negation. Examples include: * name * source_properties.a_property * security_marks.marks.marka The supported operators are: * `=` for all value types. * `>`, `<`, `>=`, `<=` for integer values. * `:`, meaning substring matching, for strings. The supported value types are: * string literals in quotes. * integer literals without quotes. * boolean literals `true` and `false` without quotes. The following field and operator combinations are supported: * name: `=` * parent: `=`, `:` * resource_name: `=`, `:` * state: `=`, `:` * category: `=`, `:` * external_uri: `=`, `:` * event_time: `=`, `>`, `<`, `>=`, `<=` Usage: This should be milliseconds since epoch or an RFC3339 string. Examples: `event_time = "2019-06-10T16:07:18-07:00"` `event_time = 1560208038000` * severity: `=`, `:` * workflow_state: `=`, `:` * security_marks.marks: `=`, `:` * source_properties: `=`, `:`, `>`, `<`, `>=`, `<=` For example, `source_properties.size = 100` is a valid filter string. Use a partial match on the empty string to filter based on a property existing: `source_properties.my_property : ""` Use a negated partial match on the empty string to filter based on a property not existing: `-source_properties.my_property : ""` * resource: * resource.name: `=`, `:` * resource.parent_name: `=`, `:` * resource.parent_display_name: `=`, `:` * resource.project_name: `=`, `:` * resource.project_display_name: `=`, `:` * resource.type: `=`, `:`
   "groupBy": "A String", # Required. Expression that defines what assets fields to use for grouping (including `state_change`). The string value should follow SQL syntax: comma separated list of fields. For example: "parent,resource_name". The following fields are supported: * resource_name * category * state * parent * severity The following fields are supported when compare_duration is set: * state_change
   "pageSize": 42, # The maximum number of results to return in a single response. Default is 10, minimum is 1, maximum is 1000.
   "pageToken": "A String", # The value returned by the last `GroupFindingsResponse`; indicates that this is a continuation of a prior `GroupFindings` call, and that the system should return the next page of data.
@@ -167,7 +167,7 @@
   parent: string, Required. Name of the source the findings belong to. Its format is "organizations/[organization_id]/sources/[source_id], folders/[folder_id]/sources/[source_id], or projects/[project_id]/sources/[source_id]". To list across all sources provide a source_id of `-`. For example: organizations/{organization_id}/sources/-, folders/{folder_id}/sources/- or projects/{projects_id}/sources/- (required)
   compareDuration: string, When compare_duration is set, the ListFindingsResult's "state_change" attribute is updated to indicate whether the finding had its state changed, the finding's state remained unchanged, or if the finding was added in any state during the compare_duration period of time that precedes the read_time. This is the time between (read_time - compare_duration) and read_time. The state_change value is derived based on the presence and state of the finding at the two points in time. Intermediate state changes between the two times don't affect the result. For example, the results aren't affected if the finding is made inactive and then active again. Possible "state_change" values when compare_duration is specified: * "CHANGED": indicates that the finding was present and matched the given filter at the start of compare_duration, but changed its state at read_time. * "UNCHANGED": indicates that the finding was present and matched the given filter at the start of compare_duration and did not change state at read_time. * "ADDED": indicates that the finding did not match the given filter or was not present at the start of compare_duration, but was present at read_time. * "REMOVED": indicates that the finding was present and matched the filter at the start of compare_duration, but did not match the filter at read_time. If compare_duration is not specified, then the only possible state_change is "UNUSED", which will be the state_change set for all findings present at read_time.
   fieldMask: string, A field mask to specify the Finding fields to be listed in the response. An empty field mask will list all fields.
-  filter: string, Expression that defines the filter to apply across findings. The expression is a list of one or more restrictions combined via logical operators `AND` and `OR`. Parentheses are supported, and `OR` has higher precedence than `AND`. Restrictions have the form ` ` and may have a `-` character in front of them to indicate negation. Examples include: * name * source_properties.a_property * security_marks.marks.marka The supported operators are: * `=` for all value types. * `>`, `<`, `>=`, `<=` for integer values. * `:`, meaning substring matching, for strings. The supported value types are: * string literals in quotes. * integer literals without quotes. * boolean literals `true` and `false` without quotes. The following field and operator combinations are supported: * name: `=` * parent: `=`, `:` * resource_name: `=`, `:` * state: `=`, `:` * category: `=`, `:` * external_uri: `=`, `:` * event_time: `=`, `>`, `<`, `>=`, `<=` * severity: `=`, `:` Usage: This should be milliseconds since epoch or an RFC3339 string. Examples: `event_time = "2019-06-10T16:07:18-07:00"` `event_time = 1560208038000` security_marks.marks: `=`, `:` source_properties: `=`, `:`, `>`, `<`, `>=`, `<=` For example, `source_properties.size = 100` is a valid filter string. Use a partial match on the empty string to filter based on a property existing: `source_properties.my_property : ""` Use a negated partial match on the empty string to filter based on a property not existing: `-source_properties.my_property : ""`
+  filter: string, Expression that defines the filter to apply across findings. The expression is a list of one or more restrictions combined via logical operators `AND` and `OR`. Parentheses are supported, and `OR` has higher precedence than `AND`. Restrictions have the form ` ` and may have a `-` character in front of them to indicate negation. Examples include: * name * source_properties.a_property * security_marks.marks.marka The supported operators are: * `=` for all value types. * `>`, `<`, `>=`, `<=` for integer values. * `:`, meaning substring matching, for strings. The supported value types are: * string literals in quotes. * integer literals without quotes. * boolean literals `true` and `false` without quotes. The following field and operator combinations are supported: * name: `=` * parent: `=`, `:` * resource_name: `=`, `:` * state: `=`, `:` * category: `=`, `:` * external_uri: `=`, `:` * event_time: `=`, `>`, `<`, `>=`, `<=` Usage: This should be milliseconds since epoch or an RFC3339 string. Examples: `event_time = "2019-06-10T16:07:18-07:00"` `event_time = 1560208038000` * severity: `=`, `:` * workflow_state: `=`, `:` * security_marks.marks: `=`, `:` * source_properties: `=`, `:`, `>`, `<`, `>=`, `<=` For example, `source_properties.size = 100` is a valid filter string. Use a partial match on the empty string to filter based on a property existing: `source_properties.my_property : ""` Use a negated partial match on the empty string to filter based on a property not existing: `-source_properties.my_property : ""` * resource: * resource.name: `=`, `:` * resource.parent_name: `=`, `:` * resource.parent_display_name: `=`, `:` * resource.project_name: `=`, `:` * resource.project_display_name: `=`, `:` * resource.type: `=`, `:` * resource.folders.resource_folder: `=`, `:`
   orderBy: string, Expression that defines what fields and order to use for sorting. The string value should follow SQL syntax: comma separated list of fields. For example: "name,resource_properties.a_property". The default sorting order is ascending. To specify descending order for a field, a suffix " desc" should be appended to the field name. For example: "name desc,source_properties.a_property". Redundant space characters in the syntax are insignificant. "name desc,source_properties.a_property" and " name desc , source_properties.a_property " are equivalent. The following fields are supported: name parent state category resource_name event_time source_properties security_marks.marks
   pageSize: integer, The maximum number of results to return in a single response. Default is 10, minimum is 1, maximum is 1000.
   pageToken: string, The value returned by the last `ListFindingsResponse`; indicates that this is a continuation of a prior `ListFindings` call, and that the system should return the next page of data.